1223163Sjilles# $FreeBSD: releng/11.0/bin/sh/tests/expansion/cmdsubst11.0 223163 2011-06-16 21:50:28Z jilles $ 2223163Sjilles 3223163Sjilles# Not required by POSIX but useful for efficiency. 4223163Sjilles 5223163Sjilles[ $$ = $(eval '${SH} -c echo\ \$PPID') ] 6